VOA慢速英语:美国怀疑华盛顿有监听设备

acknowledge --v. to admit, to say

simulator – n. an object that gives a false location for a cellphone

malware – n. Software that harms a computer

briefcase - n. a flat, rectangular container, typically made of leather, for carrying books and papers.

countermeasure- n. an action or device that is intended to stop or prevent something bad or dangerous

anomalous – adj. not expected or usual

detect - v. to notice or to find

anonymous – adj. not named or identified